Though our appetite for tumbling block floor tiles and neon paint jobs has been more than satiated by the glut of recent interiors making use of both of these décor tropes, this Barcelona flat does them quite well. Designed by CaSA, the apartment's interiors merge old and new—like a vaulted brick ceiling joining forces with very contemporary furnishings and lighting. Apparently, the unit is housed in one of Barcelona's many early-20th-century Art Nouveau buildings. Though much of its original detailing was lost to time, the brick ceiling (called a Catalan vault) remained, hiding under what Dezeen calls a "false ceiling," which was uncovered and preserved in this renovation. We dig it!